#!/bin/sh
echo 'Device            r/s     w/s     rkB/s     wkB/s   rrqm/s   wrqm/s  %rrqm  %wrqm r_await w_await aqu-sz rareq-sz wareq-sz  svctm  %util'
while [ 1 ]; do
    iostat -d -x -k 1 1 | grep md0
    sleep 2
done
